Coupler yoke



March 6, 192s.

G. T; JOHNSON COUPLER YOKE Filed Dec. 16, 1924 2 Sheets-Sheet 1 4 Z I I 3 WWI 3141x114 oz March 6, 1928.

G. T. JOHNSON COUPLER YOKE Filed De. 16, 1924 2 Sheets-Sheet 2 the vertical vibration so line 55 of Figure 4;

Patented Mar. 6, 1928.

enonen tr. aorrnson,

or coLniuBUs, omo, Ass'renon 'ro ,THE' BncxEYE' e rant CAST- INGS COMPANY,YQF'GOLUMBUS,'OHIO. I

1 course YoKE.

Application filed December 16', 1924. serial No.-756,342.

This invention relates todraft-rigging for cars and has special reference to thefront hooded end of'the draft yoke, the object-being'to so constructthe end of the yoke'asf to provide as close a fit as possiblebetweenthe coupler shank and the yoke. Asthe yoke s stationary under bufiingstress'es, shank necessarily slides rearwar yoke and, ofcourse, partsy'remain in'service "so that eventually the coupler becomes very loose in the yoke and moves around unrestrained.

causes such violentverticalvibrations of the coupler that its parts may move from com pled to uncoupled position. By invention, the coupler, in order to move upwardly, must lift the yoke and the draft gear carried'by the yoke and the weight of these parts is sufficient to retard or break up that thereis'no danger of the .coupler parts beingdislodged from the coupled position. The invention is illustrated in the accompanying drawings V a ment of the shank in a vertical plane, it being noted thatthe slots 2 are locatedbetween vertical planes and will be hereinafter fully set forth.

In the drawings, Figure 1 is a view, partly in longitudinal section and partlyin side elevation, embodiment of the invention;

Figure 2 is a view of the same, partly in horizontal section and partly in'plan;

Figure 3 is a view, showing another form of the invention;

. Figure a is a'view, similar to Figure 2, of the form shown in Figure 3;

Figure 5 is a transverse section on the Figures 6 and 7 are views, corresponding to Figures 1 and 2 respectively, showing a third form of the invention,

Figure 8 is a section on the Figure 7 ,7

Figures 9 and 10 are views, similar to Figures 1 and 2 respectively, showing a fourth line of form of the invention.

The yoke has side walls 1 provided with the ends of longitudinal slots 2 to receive the usual key operatively connecting the coupler shank with the yoke. Ordinaril the top and bottom of the hood donot close y engage the shank of the coupler or are so formed that only theirend edges engage the shank, but according to my invention, as

shown in Figures 1 and 2, the roof 3 and the floor a of the hood are increased in thickthe coupler dly in the wear takes place asthe Under these conditions, a rou h track; frequently the presentof one H and floor.

similar to Figure 1,

tions but surfaces of the yoke are longitudinal recesses verse rib ness so as tofpresent innerparallel surfaces adapted to closely engage the top and bots,

tom, respectively, of the shank. These opposed parallel surfaces extendlfrom the ex V treine forwardedges of. the roof and floor to 'the'opening through'tlie yoke definedby the .rear-endsof-tlie side walls 1 so that they;

guides for the, coupler shank in its. horizontal movement and BIIQC":

furnish substantial I trial stops for its vertical movement. A transverse groove 51s formed inthe roof and a like groove is formed in the floor thereby 1 reducing the wear up'onthe shank and the weight; of the yoke without any loss in efliciency. A socket or chamber 6 is formed in the rear end'of the roof and alsoin the rear .end of the floor for the purpose of reducing the dead weight of the yoke without'any 'reduc tion in itsstrengt-h or in the area of the shank gulding surface. 7

It willbe readily seen that the described substantial guides to construction presents the top and bottom of thecoupler shank which will effectually resist rocking move 1 greater portions of the touching the front and rear ends of the roof 7 In Figures 3, Land 5, the shank-engaging surfaces of the roof and floor are de-- fined by ribs 7 the floor and roof, respectively, from the front to the rear-edges thereof, the spaces between the ribs .serving'the same purpose as the grooves 5 in'Figure 1. I 6, 7 and 8, the floor 8 and the In Figures 7 roof 9 are free of grooves or other interrup- 10 to' eliminate excess weight. p

In Figures 9 and 10, the guiding'and limiting surfaces of the roof 11 and floor 12 extending longitudinally of I in the top and bottom. exterior 7 weight-reducing sockets 15 being provided 7 in the front edge of the rib or lug as shown.

In all the described forms, positive guides for the coupler shank are provided, particu larly at the inner ends of the side walls of the-hood, and these guides effectually resist 7 vertical vibration of the coupler.

' Having fully described my invention what vided with sockets in I claim as new and desire to tiers-Patent, is V 1 v 1. A draft yoke for cars having a hooded end with a fioorand a roof, the opposed secure by Letsurfaces of the floor and the roof being" a floor and a roof, the opposed surfaces of the floor and the roof being parallel With the longitudinal axis of the yoke and arranged to closely engage the top and bottom of a coupling shank, saidsurfaces having transverse channels between their ends and the rear portions of the roof and the floor being vertically expanded. v

3. A draftyoke having a hooded end with a floor and, a roof, the, exterior surfaces of the floor and roofconverging for- Wardly, and the inner opposed surfacesof the floor and the roof having fiat portions parallel with the longitudinal axis of the yoke arranged to closely engage the top and bottom of a coupling shank whereby to prevent relativeverticaljangling'of the shank and yoke, the foremost extremities of said fiat portions being merged in the front edges of the roof and floor respectively, and the rearmost extremities of said surfaces being located at the front ends ings of the yoke.

In testimony whereof, have signed this GEORGE T. JOHNSON.

35' of theside open- 7 

